Stuck at black screen after build.prop modifcation - Asus Eee Pad Transformer Prime

My bootloader is locked and I am rooted.
I have been on the official jelly bean release for some time. On ICS I had done quite a few build.prop modifications without any issues. I swapped in the build.prop for US JB from the development forum and ever since I am stuck at a black screen.
I have done multiple factory resets from recovery and I have let the device discharge all the way down, but the same issue persists. When at the black screen I can see the MPT device listed in my device manager but I am not sure it is reaching a state I could even establish a ADB connection.
Does anyone have any advice? Since I am locked I may be able to send it in to asus if it comes to that, but I don't know if they will be able to determine that it was rooted and void the warranty.

If I can get into the stock bootloader / recovery, should I be able to push files to the internal SD?

adb rights
HockeyZ39 said:
My bootloader is locked and I am rooted.
I have been on the official jelly bean release for some time. On ICS I had done quite a few build.prop modifications without any issues. I swapped in the build.prop for US JB from the development forum and ever since I am stuck at a black screen.
I have done multiple factory resets from recovery and I have let the device discharge all the way down, but the same issue persists. When at the black screen I can see the MPT device listed in my device manager but I am not sure it is reaching a state I could even establish a ADB connection.
Does anyone have any advice? Since I am locked I may be able to send it in to asus if it comes to that, but I don't know if they will be able to determine that it was rooted and void the warranty.
Click to expand...
Click to collapse
if you can excces it through adb try setting the rights to 644 or 6755. it is usual a right problem.

leipy said:
if you can excces it through adb try setting the rights to 644 or 6755. it is usual a right problem.
Click to expand...
Click to collapse
I am wondering if I should be able to access ADB? I can get into bootloader/recovery and connect to the phone via fastboot/apx. But when ever I just let it sit with the blackscreen I only see a "Android MTP Device." I have used the universal naked drivers and get the same thing.

HockeyZ39 said:
I am wondering if I should be able to access ADB? I can get into bootloader/recovery and connect to the phone via fastboot/apx. But when ever I just let it sit with the blackscreen I only see a "Android MTP Device." I have used the universal naked drivers and get the same thing.
Click to expand...
Click to collapse
open a cmdbox in windows, type adb shell then su.
you should have #prompt then you can chmod 644 /system/build.prop

leipy said:
open a cmdbox in windows, type adb shell then su.
you should have #prompt then you can chmod 644 /system/build.prop
Click to expand...
Click to collapse
when I do adb devices nothing is listed (when sitting at the black screen). the MTP device always shows the error triangle in device manager regardless if I use the official drivers or naked ones.

HockeyZ39 said:
when I do adb devices nothing is listed (when sitting at the black screen). the MTP device always shows the error triangle in device manager regardless if I use the official drivers or naked ones.
Click to expand...
Click to collapse
did you try to unistall official driver and reinstall naked driver? the will conflict.

leipy said:
did you try to unistall official driver and reinstall naked driver? the will conflict.
Click to expand...
Click to collapse
Just to be "that prick," are you certain that the Naked Drivers were installed as thought, and you aren't still running the official set? You should have no problem accessing through ADB when in Recovery Mode if you're running the Naked Drivers.

Hello, this is the issue I'm having right now. Did anyone found a solution on this? Tried using naked drivers but still mtp device error when in recovery mode.

Related

[Q] Unroot Fail Need Help will pay for fix

Hi everyone,
Well I'm in that freak out stage.... where I am sure some of you have been.
Heres my issue...
I have a transformer prime that;
I just unrooted using Vipermod
Then did a factory reset
Now I am stuck in CWM recovery
I attempted to do a restore but after it gets done it brings me back into the recovery
I attempted to ADB but the command prompt opens and closes right away ( I assume from not being in USB debugging, which I cant get into without a rom)
I have no rom's currently downloaded into the prime as I just wiped everything in there as well.
Please i'll gladly pay $5 to anyone who can fix this without it breaking more (hard bricking if I havent already done so)
AHHH please guys help, I'm afraid it will run out of battery soon then I'll be royally screwedddd
anyone?
are you on windows 7?
yes windows 7 professional sp 1 32bit . to reiterate I am stuck in Clockwork mod Recovery without root, and with no roms on the internal SD. I have access to one restore that works but after it completes it reboots back in recovery.
birchnick10 said:
yes windows 7 professional sp 1 32bit . to reiterate I am stuck in Clockwork mod Recovery without root, and with no roms on the internal SD. I have access to one restore that works but after it completes it reboots back in recovery.
Click to expand...
Click to collapse
Turn on your tablet, let it boot into CWM.
Open cmd, cd to the directory with adb (for example cd C:\android), then copy this line of text below and right click > paste in the command prompt window.
adb shell dd if=/dev/zero of=/dev/block/mmcblk0p3 bs=1 count=13
Click to expand...
Click to collapse
That should get you out of CWM into Android, assuming your restore works fine.
Attempted and got error device not found.
I have uninstalled the transformer drivers and also installed the universal drivers as said in other threads.
I assume to use ADB i need usb debugging on for it to read??
My issue is I cant get into any rom so turning on usb debugging is a no go.
can i fastboot push a rom to the internal sd card or better yet can i install a rom from the external SD card via Clockwork mod recovery?
birchnick10 said:
Attempted and got error device not found.
I have uninstalled the transformer drivers and also installed the universal drivers as said in other threads.
I assume to use ADB i need usb debugging on for it to read??
My issue is I cant get into any rom so turning on usb debugging is a no go.
Click to expand...
Click to collapse
Navigate to %android sdk folder%\extras\google\usb_driver, open android_winusb.inf and copy the following in the sections
"Google.NTx86" and "Google.NTamd64"
; TF201
%CompositeAdbInterface% = USB_Install, USB\VID_0B05&PID_4D01&MI_01
%CompositeAdbInterface% = USB_Install, USB\VID_0B05&PID_4D03&MI_02
;
; Fastboot for all projects
%SingleBootLoaderInterface% = USB_Install, USB\VID_0B05&PID_4DAF
Click to expand...
Click to collapse
Save the file and then try running the adb command I gave again.
Says error device not found. I appreciate the help keep it coming it's keeping my hope alive. I really hope this isnt truly hard bricked.
I cant get ADB to read the transformer prime. When I type adb devices nothing shows up . it starts the daemon successfully but then doesn't show the tfp.
Thank you again for helping. I am honestly going to pay who ever finds the true fix. This stress sucks
birchnick10 said:
Says error device not found. I appreciate the help keep it coming it's keeping my hope alive. I really hope this isnt truly hard bricked.
I cant get ADB to read the transformer prime. When I type adb devices nothing shows up . it starts the daemon successfully but then doesn't show the tfp.
Thank you again for helping. I am honestly going to pay who ever finds the true fix. This stress sucks
Click to expand...
Click to collapse
Try the instructions here. Try using this only as a last-ditch resort.
it wont shut off either... i tried both of the above mentions and cant get adb to recognize the prime
Attempted both and stuck at recovery loop without root. any more ideas? is it possible to flash rom from external sd? or is there a recovery I could fastboot rhat has this feature?
Attempted both and neither work. I need to somehow get usb debugging enabled while in clockwork mod. Or figure out a way to install a rom via external SD card while in CWM. Any more help is appreciated!
birchnick10 said:
Attempted and got error device not found.
I have uninstalled the transformer drivers and also installed the universal drivers as said in other threads.
I assume to use ADB i need usb debugging on for it to read??
My issue is I cant get into any rom so turning on usb debugging is a no go.
Click to expand...
Click to collapse
No adb debugging is needed in cwm. Even without any ROM installed. Recovery is different from Android.
Try to long press power (at least ten seconds) to hard reboot, and see if it changes something in device detection.
Did a hard reset and it boots me back into Recovery.
I was able to get a new rom into the internal SD via the emergency/backup.zip method but after it completes and I do a reboot it just boots right back into recovery again.
Any help please is apprecaited.
$5 bounty for a fix via paypal
Oh joy. This one is a spaghetti western in the making.
Okay. Question first : Does Windows 7 RECOGNISE the device in any way shape or form. To find out if this can be done, you need to power up the device and hold the power and volume down buttons, DO NOT press volume up when it suggests a kernel image. If you get three icons, hit vol down once and up once, then plug the USB cable into the PC and the tablet.
If it sees "Something", you've a chance. Download the naked universal USB driver from the dev forum, install it and have your device pick it up on the windows computer. I'm assuming from your comments that you've GOT a working fastboot and adb so I'm going to skip the instructions on that.
If you do have a something, and it's recognised, hit fastboot -i 0x0b05 reboot, if it reboots of it's own accord at this point, you can confirm you have working ADB and Fastboot access. From there you've a few choices. My personal preference would be to ADB push a rom down -after- doing a rebuild of the recovery image via fastboot (I really recommend TWRP for this bit).
http://forum.xda-developers.com/showthread.php?p=26093546#post26093546 - This post here which I wrote will explain how to flash TWRP from fastboot access, presuming you can get it. Once that step is done, wipe EVERYTHING from TWRP, and I mean the whole nine yards, including /system. Raze the memory down to only things it can't actually nuke. Once that's done, reboot to fastboot protocol, get a ROM pushed via ADB and install from inside TWRP.
That -should- get you back in business. Though judging by the tangle you're in, I make no promises.
ADB wont recognize the device. I have installed and uninstalled the drivers about 5 times.
It wont boot into fastboot - just goes directly into Clockwork Mod recovery. Even while holding power and volume down text comes up that says looking for asus recovery. then says clockwork recovery and boots directly into that.
The only way I can get anything into the internal SD card is with MasterZen88's Emergency script tool that puts any 1 file into the internal SD card as backup.zip
It was unrooted prior to all of this as well.
*cringe*
If ADB isn't working -at all- and it's not using the naked USB drivers to get you any kind of workable access. You're starting to smell very much like a hard brick scenario. I'm honestly not sure if there's a way out of that. A lot of the solutions for unbricking absolutely require that the device is able to talk to the outside world, if it's not and the ADB shell is essentially telling you it's talking to dead air, you're in a world of pain.
It's a long shot but it may be worth speaking to ASUS to see if they are willing to, for a fee, restore your tablet to factory settings. Though I can't imagine that will be cheap or simple. If you are able to get an RMA or a means of getting ASUS to poke it, make sure to take photos. Their techies appear to have the worst case of butterfingers in the world.
Go over Pandaball's suggestion, because that's really the last step I can think of before contacting ASUS

[Q] How do I debug a bootscreen hang without adb?

I'm trying my hand at porting a ROM to my device (S4 HTC One X/XL, Evita) and I've gotten as far as the bootscreen, but it hangs there (with the bootanim still running). I'd like to take a look at what's happened on the device, but I can't seem to use adb with it at this point. I've made sure drivers are installed and used multiple USB ports. ADB works in recovery and fastboot works in fastboot, but adb returns Offline when I run adb devices while the phone is sitting at the bootscreen.
Found this on StackExchange: http://android.stackexchange.com/que...-for-debugging
According to some of the replies, it's possible to use adb at boot, so I'm not sure why adb returns offline. I tried running adb logcat while the phone is off and letting it boot, but adb never establishes a connection to the phone. Not sure why it can't. Hopefully it's not another adb driver issue. I've already spent a ton of time getting adb working with this phone while booted/in recovery.
Try this it should capture a logcat of the phone booting up, power off the phone while still connected to the usb and enter the following it should say - waiting for device -
Power on the phone then cross your fingers if all goes well you should capture the logcat to bootlog.txt file in your temp directory.
Code:
adb -d logcat>c:\temp\bootlog.txt
Sent from my PACman GT-i9100 using Xparent ICS Tapatalk 2
AuSSiELaMbChOpS said:
Try this it should capture a logcat of the phone booting up, power off the phone while still connected to the usb and enter the following it should say - waiting for device -
Click to expand...
Click to collapse
Protogon said:
I tried running adb logcat while the phone is off and letting it boot, but adb never establishes a connection to the phone. Not sure why it can't. Hopefully it's not another adb driver issue. I've already spent a ton of time getting adb working with this phone while booted/in recovery.
Click to expand...
Click to collapse
The ROM is 4.2.1-based, so if the USB Debug Whitelist was implemented in that version, that might be the problem. Running adb logcat from power off with a ROM that boots fine reveals that adb starts pretty much as soon as the bootscreen comes on and logcat should start spitting out data just as quickly.
If it's not a whitelist issue, something is preventing even adb from starting on the phone.
This is a problem I too have run into while porting a ROM to my GiONEE Dream D1 (MTK 6589) Device. Have you had any luck?
Wish there was a field in build.prop to say "boot with verbose remote logging"
RickyGoldsmith said:
This is a problem I too have run into while porting a ROM to my GiONEE Dream D1 (MTK 6589) Device. Have you had any luck?
Wish there was a field in build.prop to say "boot with verbose remote logging"
Click to expand...
Click to collapse
Replying to self.
You need to modify the init shipped on your OS and instruct it to start adbd asap.
Protogon said:
I've gotten as far as the bootscreen, but it hangs there (with the bootanim still running). I'd like to take a look at what's happened on the device, but I can't seem to use adb with it at this point.
Click to expand...
Click to collapse
You can try to reboot into a working system right after (e.g. the recovery) and retrieve the last kernel boot messages by:
adb shell cat /proc/last_kmsg > last_kmsg
and then see whether you can figure out what happens by reading this log file

[Q] Bypass lock screen (special circumstances)

Hello,
I have a Motorola Razr Maxx that is running the latest OS, and is rooted. I recently broke my screen and cannot get past the lock screen so I can start my VNC server (to continue using my phone without the screen). I have searched through what seems to be all posts on bypassing pattern lock and I have not been able to succeed yet due to permission denial for super user in ADB, not having sqlite3 on my phone, and not being able to flash anything onto it in recovery mode.
Does anyone have any ideas on how to bypass the lock screen without any use of the touchscreen? I have debugging mode on, and I have a access to view what is on the screen via hdmi cable or remote viewer.
Thanks in advance.
thazzle said:
Hello,
I have a Motorola Razr Maxx that is running the latest OS, and is rooted. I recently broke my screen and cannot get past the lock screen so I can start my VNC server (to continue using my phone without the screen). I have searched through what seems to be all posts on bypassing pattern lock and I have not been able to succeed yet due to permission denial for super user in ADB, not having sqlite3 on my phone, and not being able to flash anything onto it in recovery mode.
Does anyone have any ideas on how to bypass the lock screen without any use of the touchscreen? I have debugging mode on, and I have a access to view what is on the screen via hdmi cable or remote viewer.
Thanks in advance.
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=2620456
Do you have the SafeStrap recovery? Root adb commands might work from there.
thazzle said:
Hello,
I have a Motorola Razr Maxx that is running the latest OS, and is rooted. I recently broke my screen and cannot get past the lock screen so I can start my VNC server (to continue using my phone without the screen). I have searched through what seems to be all posts on bypassing pattern lock and I have not been able to succeed yet due to permission denial for super user in ADB, not having sqlite3 on my phone, and not being able to flash anything onto it in recovery mode.
Does anyone have any ideas on how to bypass the lock screen without any use of the touchscreen? I have debugging mode on, and I have a access to view what is on the screen via hdmi cable or remote viewer.
Thanks in advance.
Click to expand...
Click to collapse
As long as your phone is rooted you should be able to do
Code:
adb shell su
.
If you've never given adb su priviledges before it may not work, in which case you should boot to recovery (if your rooted I'm assuming you have proper recover installed, and if you don't shame on you )
Any recover based on TWRP (SafeStrap, ClockworkMod, etc.) should give you adb access, you might need to mount the system partition though.
Tory Gaurnier said:
As long as your phone is rooted you should be able to do
Code:
adb shell su
.
If you've never given adb su priviledges before it may not work, in which case you should boot to recovery (if your rooted I'm assuming you have proper recover installed, and if you don't shame on you )
Any recover based on TWRP (SafeStrap, ClockworkMod, etc.) should give you adb access, you might need to mount the system partition though.
Click to expand...
Click to collapse
is there any way to boot to recovery without seeing whats on the screen? my hdmi doesn't recognize a connection until the phone is fully on
EDIT: I also never gave adb su priviledges, i rooted the phone shortly before breaking it.
Tory Gaurnier said:
As long as your phone is rooted you should be able to do
Code:
adb shell su
.
If you've never given adb su priviledges before it may not work, in which case you should boot to recovery (if your rooted I'm assuming you have proper recover installed, and if you don't shame on you )
Any recover based on TWRP (SafeStrap, ClockworkMod, etc.) should give you adb access, you might need to mount the system partition though.
Click to expand...
Click to collapse
Crap, I didn't think about that, if you have CWM then hold Volume up and Power, but it's going to be impossible to tell when it gets to recovery. If you have SafeStrap the touchscreen will have to work, if the touchscreen functions at all, then keep pressing the bottom left corner until you feel the vibration of the Recovery button.
Otherwise you might be out of luck.
Sent from my XT1049 using xda app-developers app

[Q] Device not detected only on recovery mode

I'm trying to update my G Watch by sideloading a zip file.
I installed the sdk tools and usb driver as usual.
On debugging mode and bootloader, the watch is detected as an ADB device normally. 'adb devices' command works.
But when I reboot and get on recovery mode, the watch disappears on the device manager and never get detected again. So I cannot use 'adb sideload' command.
I've never experienced this kind of issue with smartphones.
Do you have any solutions?
osikiri said:
I'm trying to update my G Watch by sideloading a zip file.
I installed the sdk tools and usb driver as usual.
On debugging mode and bootloader, the watch is detected as an ADB device normally. 'adb devices' command works.
But when I reboot and get on recovery mode, the watch disappears on the device manager and never get detected again. So I cannot use 'adb sideload' command.
I've never experienced this kind of issue with smartphones.
Do you have any solutions?
Click to expand...
Click to collapse
My watch is now bricked because I have no way to get out of "adb sideload" mode...how did you get out of that mode? please tell me.
TjPhysicist said:
My watch is now bricked because I have no way to get out of "adb sideload" mode...how did you get out of that mode? please tell me.
Click to expand...
Click to collapse
I pushed the reset button on the back(the silver one right above the charging connectors) with a pen for about 10 seconds, and it rebooted.
osikiri said:
I pushed the reset button on the back(the silver one right above the charging connectors) with a pen for about 10 seconds, and it rebooted.
Click to expand...
Click to collapse
Wow ok, that's a LOT longer than I'm used to with other devices...THANK GOD I thought I had bricked it completely.
Anyway, now i have to figure out a way to get adb to work in sideload,...i mean CLEARLY it's possible lots of others doing it..
---------- Post added at 08:26 AM ---------- Previous post was at 07:41 AM ----------
TjPhysicist said:
Wow ok, that's a LOT longer than I'm used to with other devices...THANK GOD I thought I had bricked it completely.
Anyway, now i have to figure out a way to get adb to work in sideload,...i mean CLEARLY it's possible lots of others doing it..
Click to expand...
Click to collapse
Ok, does anyone know how to get my computer to recognise my watch in recovery mode? It's not about 'driver' the computer plain doesn't recognise that anything is plugged in at all.
I know the post is quite old already, but I experience exactly the same phenomenon...
I tried multiple PCs Linux and Windows,but non of them recognized the watch (neither on 4.4W1 nor on 4.2W2).
Anyone any idea?
Wikiwix said:
I know the post is quite old already, but I experience exactly the same phenomenon...
I tried multiple PCs Linux and Windows,but non of them recognized the watch (neither on 4.4W1 nor on 4.2W2).
Anyone any idea?
Click to expand...
Click to collapse
I believe u need to update the drivers.....I always go-to device manager...update driver..hit select from list..and choose android adb....
Sent from my LGLS990 using XDA Free mobile app
mrkrabs said:
I believe u need to update the drivers.....I always go-to device manager...update driver..hit select from list..and choose android adb....
Sent from my LGLS990 using XDA Free mobile app
Click to expand...
Click to collapse
The problem, as @osikiri stated, is that the device does not get recognized at all (no unknown devices in devicemanager and the sound that comes on plugging in a device does not come as well). Furthermore, afaik Linux does not even need any drivers
Had the same issue today... and the only way out way battery death and recharge
JaceAlvejetti said:
Had the same issue today... and the only way out way battery death and recharge
Click to expand...
Click to collapse
If this really helps (seems weird): I guess the exact setting could be necassary:
You simply ran out of battery while the watch was running(not recovery or fastboot) and then plugged it in and went directly (or not?) to the recovery?
Thanks in advance, would be really great to fix this!
Anyone ever find a fix to this? I'm trying to manually install the 5.0 update and I'm having the same issue. Every post I find with search tells me to update drivers but I'm on a Mac that doesn't even use ADB drivers. I've updated the SDK.
MSigler said:
Anyone ever find a fix to this? I'm trying to manually install the 5.0 update and I'm having the same issue. Every post I find with search tells me to update drivers but I'm on a Mac that doesn't even use ADB drivers. I've updated the SDK.
Click to expand...
Click to collapse
I'm doing the same thing and having the same issues!
Yeah, same issue for me as described.
Windows (Win7 x64 for me) doesn't even realise that the device is connected when it is in recovery mode. Although it will connected properly when booted normally.
+1 Any ideas?
Same issue for me. I've tried removing and replacing it on the cradle, killing and restarting the adb server, entering recovery by the touchscreen or by the adb/fastboot commands, clearing debugging keys, etc... Anybody have any other ideas?
---------- Post added at 07:25 PM ---------- Previous post was at 06:46 PM ----------
Ok, so it appears that the recovery img on 4.4w2 broke adb support or something. There are a few threads that suggest you can root and flash it or just wait for the OTA. We'll see whether I get the OTA before I have time to try this out.
Lollipop OTA Update: Download and How-To (Root Required)
I made a script that roots and updates your watch to 5.0.1 in a click.
[UTILITY][RESTORE][UNLOCK][ROOT] LG G Watch Tool
My way of doing it
osikiri said:
I'm trying to update my G Watch by sideloading a zip file.
I installed the sdk tools and usb driver as usual.
On debugging mode and bootloader, the watch is detected as an ADB device normally. 'adb devices' command works.
But when I reboot and get on recovery mode, the watch disappears on the device manager and never get detected again. So I cannot use 'adb sideload' command.
I've never experienced this kind of issue with smartphones.
Do you have any solutions?
Click to expand...
Click to collapse
I've similar problem, and I've spent almost 3 hours to find the solution. I found that following solution work for me:
http://forum.xda-developers.com/g-watch-r/development/manual-ota-update-root-t2969845
I've changed the step slightly according to the comments inside the thread:
- Enter Bootloader (swipe top left-bottom right as soon as the LG logo pops up on boot)
- Unlock bootloader (fastboot oem unlock) and boot the watch normally once
- Turn off and re-enter bootloader
- Flash 5.0.1 Stock Recovery (fastboot boot recovery.img)
// Do Not Flash 5.0.2 stock recovery
- Enter recovery and ADB sideload the update (tap the android, select install update from ADB and enter adb sideload filename.zip)
//you might have to reinstall the ADB drivers, just follow the simple step to install ADB driver
Done.
fi thought it was finally the solution, but fastboot oem unlock bricked my sony smartwatch3. I see tomorrow if with my windows pc i can fix with sony companion, otherwise i'll have to use the warranty
willisc said:
I've similar problem, and I've spent almost 3 hours to find the solution. I found that following solution work for me:
http://forum.xda-developers.com/g-watch-r/development/manual-ota-update-root-t2969845
I've changed the step slightly according to the comments inside the thread:
- Enter Bootloader (swipe top left-bottom right as soon as the LG logo pops up on boot)
- Unlock bootloader (fastboot oem unlock) and boot the watch normally once
- Turn off and re-enter bootloader
- Flash 5.0.1 Stock Recovery (fastboot boot recovery.img)
// Do Not Flash 5.0.2 stock recovery
- Enter recovery and ADB sideload the update (tap the android, select install update from ADB and enter adb sideload filename.zip)
//you might have to reinstall the ADB drivers, just follow the simple step to install ADB driver
Done.
Click to expand...
Click to collapse

Locked Password

Not sure if this is the proper place for this question; if not, please move. I picked up an Irulu Expro No. X9 Android tablet on eBay. It seems to work fine, except I can't get past the login screen. I tried many times the various key combinations to get it into recovery mode but none worked. Other suggestions had me putting it in debug mode first, but how to do that if you can't get logged in? I'm not concerned about saving any data, I would just like to be able to use it. I would appreciate any help to solve my problem. Thanx.
@jrockow
Have you ever tried to check whether the device is accessable by means of ADB?
Code:
adb devices
If it's accessable then you easily can remove the password lock. You do this by launching Android Settings via ADB as shown next:
Code:
adb devices
adb shell am start -a android.settings.SETTINGS
jwoegerbauer said:
@jrockow
Have you ever tried to check whether the device is accessable by means of ADB?
Code:
adb devices
If it's accessable then you easily can remove the password lock. You do this by launching Android Settings via ADB as shown next:
Code:
adb devices
adb shell am start -a android.settings.SETTINGS
Click to expand...
Click to collapse
Thanx for your quick reply.
adb devices doesn't list anything.
I thought you needed to enable USB debugging for ADB to work?
Don't know how to do that if I can't log in.
jrockow said:
Thanx for your quick reply.
adb devices doesn't list anything.
I thought you needed to enable USB debugging for ADB to work?
Don't know how to do that if I can't log in.
Click to expand...
Click to collapse
OK, so I'm somewhat of a rookie when it comes to ADB and FASTBOOT.
I'm not sure I have everything correct. I'm using an app called "Minimal ADB and Fastboot".
I have another tablet, same as the one I can't access, and I have turned on the developer options.
Even with that, I still can't see any devices when I run ADB.
FYI: When I look at devices in my PC it shows up as X9, which I believe is correct.
With my no password tablet, I can actually see all the directories of my Android on my PC.
If I try that with the other one don't see any directories.
jrockow said:
With my no password tablet, I can actually see all the directories of my Android on my PC.
Click to expand...
Click to collapse
Android's USB in that case is set to MTP mode, not ADB mode. MTP operates at the file level. Your Android device doesn’t expose its entire storage device to Windows computer. Instead, when you connect a device to your computer, the computer queries the device and the device responds with a list of files and directories it offers.
When Andoid's USB is in ADB mode, device can completely get controlled from Windows computer.
jrockow said:
I'm using an app called "Minimal ADB and Fastboot".
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Serious Android device owners use the USB-driver ( AKA ADB ) as provided by device's OEM/Carrier.
jwoegerbauer said:
Android's USB in that case is set to MTP mode, not ADB mode. MTP operates at the file level. Your Android device doesn’t expose its entire storage device to Windows computer. Instead, when you connect a device to your computer, the computer queries the device and the device responds with a list of files and directories it offers.
When Andoid's USB is in ADB mode, device can completely get controlled from Windows computer.
Serious Android device owners use the USB-driver ( AKA ADB ) as provided by device's OEM/Carrier.
Click to expand...
Click to collapse
I was incorrect in my earlier post, when I said I turned on the developer mode on my "good" tablet and I still couldn't access it thru ADB.
I found out I really didn't have it turned on, and when I did I was able to execute the ADB commands.
That gets me back to my earlier post about not being able to turn on the developer mode on my "bad" tablet if I can't log in.
I would think with all the guys working on this stuff someone has come up with a way to get around a lost password?
I remind you, I tried the power+volume sequence many times, many ways, so I need a different approach; if there is one?
Thanx.
@jrockow
Because the tablet can't connect with PC via ADB then wondering why you don't contact seller of the tablet? Unlock Screen Password always can be done with Google Account Android device initially was bound to.
jwoegerbauer said:
@jrockow
Because the tablet can't connect with PC via ADB then wondering why you don't contact seller of the tablet? Unlock Screen Password always can be done with Google Account Android device initially was bound to.
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Click to collapse
I have already reached out to the seller. However, he knows nothing of the history of the tablet. He's just a guy who collects tons of electronics and sells them on eBay.
What really frustrates me is I can quite easily get my "good" tablet to enter recovery mode with the power+vol combination. I have tried many, many times to duplicate the same combo on the "bad" tablet and it just jumps over the recovery mode and boots to the logon screen.
Is it possible someone made some change to the tablet that won't allow it to go into recovery?
jrockow said:
I have already reached out to the seller. However, he knows nothing of the history of the tablet. He's just a guy who collects tons of electronics and sells them on eBay.
What really frustrates me is I can quite easily get my "good" tablet to enter recovery mode with the power+vol combination. I have tried many, many times to duplicate the same combo on the "bad" tablet and it just jumps over the recovery mode and boots to the logon screen.
Is it possible someone made some change to the tablet that won't allow it to go into recovery?
Click to expand...
Click to collapse
So, I've come to the conclusion that what I'm asking for just can't be done.
Can't enter reset with any key combo I've tried; can't use ADB because debugging not on; can't go to Google because I don't know who owned the phone before me.
If this were a PC device, there are multiple apps available to get around a lost password. I've done it many times.
I was really hoping there would be some Android genius out there who could help.
What a shame to realize that a perfectly good working device might as well be thrown in the trash.
jrockow said:
So, I've come to the conclusion that what I'm asking for just can't be done.
Can't enter reset with any key combo I've tried; can't use ADB because debugging not on; can't go to Google because I don't know who owned the phone before me.
If this were a PC device, there are multiple apps available to get around a lost password. I've done it many times.
I was really hoping there would be some Android genius out there who could help.
What a shame to realize that a perfectly good working device might as well be thrown in the trash.
Click to expand...
Click to collapse
If you know that the phone basically supports ADB, if the phone has a slot for external SD-card, if you can boot into Recovery Mode, if the Recovery Mode allows you to "apply update from sd-card" then you by means of an OTA can enable USB-debugging, then you can access the phone via ADB.
Currently I'm working on such an UPDATE.ZIP and will, if it's bug free, it publish here on XDA.
Personally don't own a phone what supports ADB: it's a HUAWEI Y7 2019. If you are willing to become a tester let me know it. I'll then PM you the link to the UPDATE.ZIP.
jwoegerbauer said:
If you know that the phone basically supports ADB, if the phone has a slot for external SD-card, if you can boot into Recovery Mode, if the Recovery Mode allows you to "apply update from sd-card" then you by means of an OTA can enable USB-debugging, then you can access the phone via ADB.
Currently I'm working on such an UPDATE.ZIP and will, if it's bug free, it publish here on XDA.
Personally don't own a phone what supports ADB: it's a HUAWEI Y7 2019. If you are willing to become a tester let me know it. I'll then PM you the link to the UPDATE.ZIP.
Click to expand...
Click to collapse
If I could boot into Recovery Mode my problem would be solved.

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